Deflating device.



W. F; SPRIC-K. DEFLATING DEVICE. APPLICATION FILED JUNE 20, 1913.

Patented Oct. 28 1913.

- INIVENTOR W/LU/IM f SPfi/C/T W/TzE'ESSES the threads of the valve casing. tohold the V hook or handle 4 as shown.

- surface at right angles to the axis of the plunger for engaging the stem 2 of the air WILLIAM FREERICK SPEECH, 0F STICKNEY, $OUTH DAKOTA.

DEFLATING- BEVICE.

Specification of Letters Patent.

Patented Get. 28, 1913 Application filed June 2a 1913. Serial no. mesa,

TQ all whom it may. concern H {Be itlgnovzhlthat I, WVILLIAM F. SPRIGK, acitizenof the United States, and a re si' dent'iof Stickiiey, in the county of Aurora and fitat of South Dakotmfhave invented. a

Devices, of wh ichtje following is a fi'ationt- My invention is an. improvementin do fiating devices for ns'e with the airvalves specivided fdr opening the valve, and having meahslri boniiction therewith for gripping valve open to permit the air therefrom. p

In the drawings-:-Figur 1 is a'perspective yieiv of the device, and Fig. 2 is an enlarged longitiidinal section, showing the device in operation.

The present.- embodiment of the invention comprises a rod or plunger 1, having one of its ends out square across to form a plane to discharge relief-valve in the casing3. The opposite end of the rod or plunger is bent to form a A plate consisting of two portions 5 and 6 ofl'set laterally with respect to each other and connected by a connecting portion 7 is provided for cotiperating with the plunger. At the junction of the portions'6 and 7, the side edges of the plate are bent laterally to form flanges 8, and the plunger 1 is a1 ranged between the said flanges and is pivotally connected to the plate by means of a pivotpin 9, the said pin passing through the flanges 8 and the plunger.

A plate spring 10 has one of its ends connected to the upper end of the portion 5 of the plate, by means of a rivet 11, and the lower end of the plate is curved toward the plunger and is provided with a notch or recess 12,- for receiving the plunger. The spring normally acts to ress the lower end of the plunger toward t e portion 6 of the plate and the said portion 6 of the plate is arched transversely away from the plunger, and is provided on its inner face with a transverse series of ribs or teeth 13, the saidribs or teeth facing upwardly as shown.

The device is intended for use with pneumatic tires as for instance'of the character shown in Fig. 2, wherein the inner casing 14 roughly with the pitch of the tire is deflated, an

of the tire is arranged within the shoe 15,

andis provided witlithe valve casin 3,havin its teeth or ribs that the said teeth will engage with? the threads-to prevent the plate from moveine' t away from the valve casing. necessary to remove pneumatic tire from the rim, I must first i3 detiat-edin order to permit the removal. This operation is. as-a rule, done by the pin provided on the cap which closes the end of the valve casing. The operator;

must however, hold the valve open until the v operat on requiring a considerable length of time. The present device is adapted to permit this operation to take place without other assistance from the operator than the placing of the device in place. .When it is desired to deflate the tire, the cap, not shown, is-removed, and the operator grasps the deflating device, ressing the portion -5 of the plate toward 1!: .e hook c-r handle 4: as indicated in dotted lines in Fig. 2. This action presses the portion dot the plate away from the adjacentend of they plunger and with the device. so held the plane end of the plunger is'inserted in the outer end of the casing to engage the valve stem and to open the valve. As soon as the valve is open, the portion dot the plate is re leased, and the spring 10 forces the portion 6 of the plate into contact with the threads 16 of the valve casing. l The teeth or ribs 13 engage the threads of the valve casing and hold the device in place with the valve open. When the tire has been deflated, the portion 5 of the plate is pressed toward the handle 4:, thus releasing the teeth 13 from the threads 16 and permitting the removal of the de flating device.

I claim 1. A deflating device for use with the air valves o:t' pneumatic tires, comprising in combination a plunger rod having one end adapted to enter the valve casing and e gage the stem of the valve to open the same, said plunger having at the other end a hook or handle, a plate having its side edges flanged intermediate its ends, the plunger rod being received between the flanges, a

pivot pin pivotally connecting the plunger to the flanges, the lower end of the plate extending to approximately the lower end of the plunger and the said lower end of the outer end threaded as indicated at 16 to'receive a holding'eap, not shown. The, 13 ar lspaced to correspond threads Ed.

n Wheneveigiit is for repairs or the like, the tireplate being curved transversely and arcurved transversely and arranged with its ranged with its concave face toward the concave face toward the plunger, said face plunger, said face having a series of transhaving a series of transverse ribs or teeth facing the opposite end of the plunger and adapted to engage the threads of the valve casing to hold the plunger in place, and a spring normally pressing the toothed end of the plate toward the plunger.

3. A deflating device comprising a plunger rod for insertion in the air valve of the pneumatic tire to engage the stem to open the valve, a plate pivoted intermediate its ends to the plunger, the lower end of the plate being curved transversely to fit the periphery of the valve casing and being provided on its inner face with teeth for engagmg movement of the plate away from the easing, and a spring normally pressing the toothed end of the plate toward the plunger.

WILLIAM FREDRIOK SPRICK.

Witnesses:

O. E. OBRIEN, M. M. MILLS.

verse ribs or teeth facing the opposite end of the plunger and adapted to engage the threads of the valve casing to hold the plunger in place, and a plate spring secured at one end to the plate at the end remote from the teeth, said spring being curved toward the plunger and having a notch at its free end for receiving the plunger and acting normally to press the toothed end of the plate toward the plunger.

2. A deflecting device for use with the air valves of pneumatic tires, comprising in combination a plunger rod having one en adapted to enter the valve casing and engage the stem of the valve to open the same, a plate ha'ving its side edges flanged inter mediate its ends, the plunger rod being received between the flanges, a pivot pin pivota'lly connecting the plunger to the flanges, the lower end of the plate extending to approximately the lower end of the plunger and the said lower end of the plate being i the threads of the casing to prevent, 

